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a. SCOGGINf AIR BRAKE. APPLICATION FILED JULY 1, 1914.

Patented Aug. 15,1916.

2 SHEETSSHEET 1/1 VENTOH A TTOR/VEVS SCOGGIH.

. 'AIR BRAKE. APPLICAIION FILED JULY], 1914. v 1,195,108. Patented Aug. 15, 1916.

'2 SHEETS-SHEET 2.

' 4 TTOBNEYS neirren RAY SCOGGIN, F EUGENE, GEEK-1&2?

AIEBEA.KE.

messes,

To aZZ whom it may concern:

Be it known that I, RAY SooeoIN, a citi-' zen oi the United States, and a resident of Eugene, in the county of Lane and State of Oregon, have invented a new and useful Improvement in i-kir-Brakes, of which the following is a specification.

My invention is an improvement in air brakes, and has for its object to provide a. brake of the character specified, especially designed for use with automobiles and like vehicles wherein the brake is operated by fluid under pressure controlled by the driver, having separate and independent operating and releasing means for the brake, and wherein a pump is operated by the IDO- tor of the vehicle for compressing air and storing it foruse in operating the brake.

In the drawings :F igure 1 is a sectional. view of the brake mechanism in connection with an automobile, the section being taken substantially on the line l-1 of 2, Fig. 2 is a. partial. plan. view, Fi 3 is a section on the line 33 of Fig. l, Fig. 4 is a section on the line -l-i of Fig. 3, looking in the direction of the arrow adjacent to the line, and Fig' 5 is a sectional view of the worm gear housing.

The present enilmdiznent of the invention is shown in connection with the frame 1 of an automobile, wherein a brake disk 2 is secured to the rear axle 3, adjacent to each oi the wheels 4. Each disk 2 is encircled by a brake band 5, the ends of which are connected to the opposite ends of a lever 6, secured intermediate its ends on a shaft 7,

by means of links 8 and 9, respectively.

lhe shaft is journaled in bearings 10 on bracket arms 11, extending forwardly from the housing '12 of the rear axle, and an upstanding arm. 13 is rigidly connected with the shaft 11 a1- one side of the frame 1 of the vehicle.

A link lei is connected at one end to the arm 13, and the o'her end of the link passes through a bar 15, arranged transversely of the frame, and slidable at its ends between guides 16, secured to the inner face of the channelbars forming the sides of the-frame l of the vehicle. Nuts 17 are threaded on to the link on opposite sides of the bar, and

a crankshaft 18 is journaled in a bearing 19 transversely of the frame in front of the shaft 7.

The shaft 18 is provided with a crank 20 at one side of the frame, and the crank is Specification cfLetters Patent.

Application filed July '7, 191A.

. are threaded. on to the said and Fratented no;

Serial No. @iLQOS.

connected to a pinnp to he described. wrist pin ogf the crank 20 mg; v a sectional. hearing 21 on one end oil a link and the other end of the link is received tween the arms of a fork on. the order end of a piston rod 21 of the on t 25 is passed trans 'erselv 0.1. and argu link to pivot-ally conii to the piston rod. The piston rod through an opening in one end a drical compartment 526 in a ea ing at side of the frame and to be later dose and is connected with the ger 27 slidahly mounted in The casing just tnei'stionpartnients, a large central partnient and lateral conipa namely, the compartment 26 tioned, and a corupartnient i or plunger 30 is arranged in the nient 29, and a piston or plunger connected at one end to the pf ton other end the rod extends throu,

5h an o 1- ing in' the head 3:2 ot the casing, which contains the three compartments jus tioned. The outer end of the rod through an opening in a bar 8%, an i on side of the bar.

A coil soring 2-35 encirr: piston or plunger ell, the head 32 of the casing, and. at to press the piston toward the oppo oi the cylindrical compartment or c l] The casing 33f:32 provided a t one with an e tension which is secured adjacent channel bar of? the and nuts and at the oppos' the extension 37 the casino has a ini connection with the o in frame. illie ead 32 is prorideo 26 and 29 at each conipmrtn and Q9, and at the oppos der 2o the port so" the cylinder 26 hit. is connected to a similar port in the coin partinent 18, by means of a o'pe it).

n valve casing and a v e ll is intcrposed in the pipe for eontrollin v inunication of the cylinder so with the coinpartnient 2S, and a similar pi ie connects the compartment 28 with the compartment 29, the pipe 42 being arranged similarly tothe pipe and having a valve and valve easing 43 interposed in the length thereof for controlling the communication of the cylinder 29' 'ith the cylinder 2". The C0111- the cornpartment 28 is provided with a port in its upper side with which is engaged a valve casing 4:14. A conical seat is formed in the casing ll, and a valve cooperates with the seat. The valve has a stem 46, passing upwardly into a guide in the casing, and a coil spring l7 encircles the stem and acts normally to seat the valve. The compartment 29 is also provided with a port at the opposite end from the port 29, and the valve casing 1:6 is engaged with. the port, the valve in the casing controlling the com munication through the port. Arms 47 and 48 are connected with the valves in the easings and 4.6, and links l9 and are connected with the respective arms at one end of the links. The link 49 extends forwardly to a chnnection with a radial arm 51, on a shaft 52, to be presently described, and the link 50 extends forwardly to a connection with a radial arm 53 on a shaft 5 f, journalcd transversely of the frame.

A treadle lever 55 is rigidly connected at one end with the shaft for convenience in operating the same, the treadle having a foot plate 56 at its upper end, and a coil spring 57 is arranged between the lever and a perforated lug 58 on the casing 59. It will be obvious that when the treadle lever is pushed forwardly to oscillate the shaft 5% the link 50 will be moved rearwardly to swing the arm 48 toward the casing.

The shaft 52 before mentioned, is journaled in bearings 60 in arms 61, extending forwardly and downwardly from a casing 62 supported by the frame, and a shaft 63 is journalcd in the casing, and isprovided be forced out through the pipe 40 into the at its lower end with a bevel gear (34, which meshes with a similar gear 65 on the shaft 52. The upper end of the shaft 63 is provided with a handle 66 for moving the shaft, and the handle is above the foot plate of the treadle.

The crank shaft 18 is driven from the motor shaft 6'? by means of a worm 68, secured to the said shaft and meshing with a worm wheel 69, secured to the crank shaft 18 by means of key 70. i The motor shaft is journaled in a housing 71, and the worm wheel 69 and the worn; 68 are housed in an GXtGII-i sion 7 2 from the housing 71.

The operation of the improved brake is as follows:W hen the motor is running the crank shaft 18 will be driven and the pump piston 27 at the side of the frame will be operated to compress air in the pressure chamber 28. The cylinder 26 is provided with an inlet port 73 in the end adjacent to the pipe l0, and as the piston is reciprocated air will be drawn into the cylinder and will storage chamber 28. The valve in the easing 41 is a check valve to prevent the return of the air to the cylinder 26.

The inlet 73 has a. check valve to prevent passage of the, air outward, and the valve 45 in the casing 44 is a safety valve for pretank or compartment 28 to pass into the compartment 29. As the air under pressure enters, the piston 30 is forced rcarwardly.

The bar 84: is connected to the adjacent end of a bar 74, and the ends of the said bar 74 are connected by links 7 5 to the bar 15 before mentioned. Each end of each of the links 75- is threaded, and lock nuts 76 and 77, respectively, are threaded on to the front and the rear ends of the links on opposite sides of the bars 15 and 74. Because of this connection the bar 15 will be moved rearwardly by the piston or plunger 30, and the shaft 7 will be oscillated in a direction to tighten the brake bands 5 on the disks 2. To release the brake, it is only necessary to open the valve in the casing 46, this valve being the release valve. When it is opened by turning the shaft 63 in the proper direction the air exhausts from the cylinder 29 and the spring 36 drives the piston 30 toward the front end of the eyl1nder,

forcing out the air and leaving the mechanism in condition to be again operated when desired.

The casing 33-32 may be of any suitable material that will withstand a pressure of 60 pounds to the square inch. There is always ample air pressure in the storage tank, and there can be no over-loading of the tank because of the safety valve 4L5. The ports 26 and 29 of the compartments 26 and 29 are for permitting the free passage of air to and from the adjacent ends of the compartments during the movements of the pistons or plungers.

I claim 2- In a vehicle provided with brake mechanism and with means for operating the same, a casing comprising afimain storage compartment and a lateral cylindrical compartment at each side of the central compartment, a piston in each of the last-named compartments, a rod connected with each piston, the rods extending through adjacent ends of the compartments, the said end of each compartment having a port, one of the rods being connected with the brake op erating mechanism, a spring for moving the piston away from the brake operating mech-' anism, the other rod being connected with means driven by the motor of the vehicle for reciprocating the said piston, a connection between the last-named compartment and the central stora 'e 00m mri'ment at tbs dricnl (10m m'rtmm'x." 1t L1 "mid jinst-mnwi opposite end fmm the port :1 check valve and and nmnually cnmu'nled mechanism in the said connectimn a coz'uiwctiol'l bvtwevn 01 qmrating each of the is ammed vqlves". 71 I; the other gompal'tmont and the central on HA 7? SCUGGIH.

age compartment at the said lust-xmzned end, a valve 1n the Saul, connechon, an hanst valve 111 the mud lnst-nmnvd wim v 'Wl-zms. 

